855061391311 has 2 divisors, whose sum is σ = 855061391312. Its totient is φ = 855061391310.

The previous prime is 855061391293. The next prime is 855061391333. The reversal of 855061391311 is 113193160558.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 855061391311 - 2³⁷ = 717622437839 is a prime.

It is a super-2 number, since 2×855061391311² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (855061391111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427530695655 + 427530695656.

It is an arithmetic number, because the mean of its divisors is an integer number (427530695656).

Almost surely, 2^855061391311 is an apocalyptic number.

855061391311 is a deficient number, since it is larger than the sum of its proper divisors (1).

855061391311 is an equidigital number, since it uses as much as digits as its factorization.

855061391311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 43.

The spelling of 855061391311 in words is "eight hundred fifty-five billion, sixty-one million, three hundred ninety-one thousand, three hundred eleven".